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首页> 外文期刊>Acta Horticulturae >Response of Helianthus tuberosus L. to pinching techniques for ornamental containerized purpose
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Response of Helianthus tuberosus L. to pinching techniques for ornamental containerized purpose

机译：Helianthus tuberosus L.对装饰集装箱用途的技术回应

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摘要

Most Jerusalem artichoke (JA, Helianthus tuberosus L.) grown as edible functional food plant, produce more tubers with high stems (1.5-2.0 m). To develop them as potted plant it is necessary to control their height and to increase branches in order tocreate a more compact canopy. Two experiments were conducted under greenhouse conditions. Experiment 1 demonstrated that pinching seedlings at all position (2, 3, and 4 leaf pairs: LFP) increased canopy width, total leaf area, compactness index, numberof branching and leaf and stem dry weight, but reduced plant height more than 40% when compared with non-pinching treatment. Leaving 2 or 3 LFP instead of 4 LFP after pinching only increased compactness index with marketable characters. None of the pinching times (10, 20 and 30 days after tuber planting: DAP) affected total leaf area, compactness index, number of branching and total leaf area. Pinching at 30 DAP gave the lowest leaf and root dry weight (DW). No interaction between pinching position andtime in all growth parameters was seen, except in plant stem DW by leaving 2 or 3 LFP at 20 DAP after pinching. Experiment 2 showed that pinching seedlings with 2 LFP had low new tuber DW through all growth stages, however the underground part produced higher DW when reaching the harvesting stage. Higher reducing sugar accumulation in new tubers was found in normal plants (non-pinched) from flowering stage to senescence stage, thereafter its content declined compared to pinching plant at harvesting time. This result suggests that pinching technique might be partially a good horticultural practice to control JA height and canopy for the use as an ideal ornamental containerized plant.
机译：大多数耶路撒冷朝鲜蓟（JA，Helianthus tuberosus L.）种植为可食用的功能性食品厂，生产更多茎的茎（1.5-2.0米）。为了开发它们作为盆栽植物，有必要控制其高度并增加分支以进行更紧凑的冠层。在温室条件下进行两次实验。实验1证明，在所有位置（2,3和4叶对：LFP）捏捏幼苗，增加了冠层宽度，总叶面积，致密度指数，枝条和叶片的Numberof，但植物高度减少了40％以上与非捏处理相比。在夹紧时留出2或3 LFP而不是4 LFP，只需使用可营销人物增加紧凑性索引。没有捏合时间（块茎种植后10,20和30天：DAP）影响总叶面积，紧凑性指数，分支和总叶面积。夹住30个DAP，给出了最低的叶片和根系干重（DW）。除了在夹持后，除植物茎DW外，除了在植物茎DW中，除了在20个DAP夹持后，除了在植物茎DW中没有相互作用。实验2表明，捏合2 LFP的幼苗通过所有生长阶段具有低新的块茎DW，但是在到达收获阶段时，地下部分产生了更高的DW。在从开花阶段到衰老阶段的正常植物（非挤压）中发现了新块茎中的降低糖积累，此后其含量与在收获时间的捏合植物相比下降。这一结果表明，捏合技术可能部分是一种良好的园艺实践，可以控制JA高度和冠层作为理想的观赏集装箱厂。

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